Crate meta

Expand description

Collection of general purpose meta tools.

§Module :: meta_tools

Collection of general purpose meta tools.

§Sample :: variadic constructor of collections

Among other useful meta tools the module aggregates variadtic constructors of collections. For example macro hmap! for constructing a hash map.

use meta_tools::*;

let meta_map = hmap! { 3 => 13 };
let mut std_map = std::collections::HashMap::new();
std_map.insert( 3, 13 );
assert_eq!( meta_map, std_map );

§Sample :: function-style call

Apply a macro for each element of a list.

Macro for_each may be called either in function-style way or in map-style way. Pass name of macro to apply to elements as the first arguments and elements after the macro name. Use comma as delimiter.

use meta_tools::*;
for_each!( dbg, "a", "b", "c" );

// generates
dbg!( "a" );
dbg!( "b" );
dbg!( "c" );

§To add to your project

cargo add meta_tools

§Try out from the repository

git clone https://github.com/Wandalen/wTools
cd wTools
cd sample/rust/meta_tools_trivial
cargo run

Modules§

dependency: Dependencies.
exposed: Exposed namespace of the module.
meta: Collection of general purpose meta tools.
orphan: Orphan namespace of the module.
prelude: Prelude to use essentials: use my_module::prelude::*.
protected: Protected namespace of the module.

Macros§

Options: Function-like macro to generate options adapter and its implementation for structure option.
_impls_callback: Internal impls1 macro. Don’t use.
bmap: Literally just a BTreeMap literal with keys and values into’d.
braces_unwrap: Unwrap braces of token tree and pass its content to the passed callback. If token tree in not braced then it passed to callback as is.
bset: Literally just a BTreeSet literal with values into’d.
fn_name: Get name of a function.
fn_rename: Macro to rename function.
fns: Split functions.
fns2: Split functions.
for_each: Module :: for_each
heap: Literally just a BinaryHeap literal with values into’d.
hmap: Literally just a HashMap literal with keys and values into’d.
hset: Literally just a HashSet literal with values into’d.
identity: Macro which returns its input as is.
idents_concat
impls: Define implementation putting each function under a macro.
impls1: Define implementation putting each function under a macro.
impls2: Define implementation putting each function under a macro.
impls3: Macros to put each function under a named macro to index every function in a class.
index: Index of items.
list: Literally just a LinkedList literal with values into’d.
mod_interface: Protocol of modularity unifying interface of a module and introducing layers.
tests_impls: Define implementation putting each function under a macro and adding attribute #[ test ].
tests_impls_optional: Define implementation putting each function under a macro and adding attribute #[ test ].
tests_index: Index of items.
vecd: Literally just a VecDeque literal with values into’d.

Derive Macros§

Former: Derive macro to generate former for a structure. Former is variation of Builder Pattern.

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